When using the xUnit Custom Tool and specifying a Global Property (ex. ${XUNIT_RFT_TO_JUNIT} ) as the Custom stylesheet, the property does not get resolved. This makes the plugin look for a file named "${XUNIT_RFT_TO_JUNIT}" in the workspace directory. When is should be looking for the path specified in the Global Property
Note: The Custom Tool Pattern accepts and resolves Global Properties just fine. (ex ${XUNIT_CUSTOM_XML} )